After he repeatedly asserted that Robinhood customers had made $35 billion in realized and paper investment gains, Jim Himes, Democrat of Connecticut, pushed him on more specifics, which Mr. Tenev ultimately declined to give. When he said that Robinhood had curbed some customer trades because clearinghouses demanded more collateral from his firm, Alexandria Ocasio-Cortez, Democrat of New York, shot back that the brokerage may instead have failed to manage its own capital risks. Mr. Tenev responded, “We wanted to give our customers delightful features.” Sean Casten, Democrat of Illinois, accused the company of taking advantage of inexperienced traders, including a customer who died by suicide after believing he had run up huge losses via the Robinhood app. To make his point, he called Robinhood’s automated help line: A message told users to email for support, and then the call ended.

Fred Segal, whose clothing boutiques became an emblem of Los Angeles cool by selling form-fitting jeans and chambray shirts to the likes of Bob Dylan, Farah Fawcett and the Beatles, died in Santa Monica, Calif., on Thursday. Mr. Segal became one of the West Coast’s best-known designers and retailers in the 1960s and helped shape the image of Southern California fashion as breezy, sexy and relaxed. His namesake ivy-covered store became a hangout for fashionistas, Hollywood actors and big-name artists and musicians. Mr. Segal opened his first store in 1960, a 700-square-foot space on Santa Monica Boulevard that sold denim jeans, chambray shirts and pants, velvets and flannels, according to the company’s website.

WASHINGTON — The Food and Drug Administration on Saturday authorized Johnson & Johnson’s single-shot Covid-19 vaccine for emergency use, beginning the rollout of millions of doses of a third effective vaccine that could reach Americans by early next week. Johnson & Johnson has pledged to provide the United States with 100 million doses by the end of June. When combined with the 600 million doses from the two-shot vaccines made by Pfizer-BioNTech and Moderna slated to arrive by the end of July, there will be more than enough shots to cover any American adult who wants one. But federal and state health officials are concerned that even with strong data to support it, some people may perceive Johnson & Johnson’s shot as an inferior option.

The saleswoman waited for Yang Jinzhong at the bus stop. With every call and meeting, the saleswoman made the same pitch: By investing just a little bit of money, Ms. Yang could secure a spot in a retirement home at a great price and make some extra cash to boot. In the end, Ms. Yang gave $31,000, her life savings, to the retirement company. Now the saleswoman’s company is one of hundreds of recent cases that are under investigation or have been prosecuted by Chinese authorities who have grown increasingly concerned about retirement home scams.